ADAM: I hope this isn't too disappointing, but the reappearance of Zack (Eric Millegan) in the show's 100th episode on April 9 is only in flashbacks. Interestingly, we learn that Zack and Hodgins (T.J. Thyne) weren't always buds, which explains why one of the two clubs the other with a baseball bat.
Tipster: belly13
Source: TV Guide
on DVD today at 
as well at